American Journal of Engineering and Applied Sciences

Utilizing Geographic Information System for Prediction of Soil Erosion in Sono Sragen Catchment Area

Muhammad Mukhlisin and Sukoco

DOI : 10.3844/ajeassp.2011.270.275

American Journal of Engineering and Applied Sciences

Volume 4, Issue 2

Pages 270-275

Abstract

Problem statement: Embung is a small dam created by manmade lakes and used to catch
water during rainy season for an irrigation source. In Sragen area, Embung Sono is one of around
twenty embung that used to catch rain water for irrigation. Soil erosions in catchment area are potential
to reduce water capacity of the embung. Although many embung have been constructed in Sragen
areas, the numbers of soil erosion in catchment area of embung are not well considered. Approach:
Soil erosion in the Sono catchment area was analyzed using Geographic Information System (GIS) and
Universal Soil Loss Equation (USLE) method. Results: The result showed that total number of soil
erosion in the Sono catchment area is 63.50 ton/ha-year and categorized in moderate classified. Value
of Sediment Delivery Ratio (SDR) for catchment was 0.34. Empirical equation proposed by Renfro,
Vanoni and USDA were also used to analyze the SDR value. Conclusion: It was found that USDA is
the best method that can be used to predict soil erosion in Sragen area. It means the crop management
and environmental conservation in Sono catchment need to be improved.